Variance partitioning of deconstructed tropical diatom communities in reservoirs cascade

Autor(es)

Marquardt, Gisele C. ^[1] ; Padial, Andre Andrian ^[2] ; Bicudo, Carlos E. de M. ^[1]

Afiliação do(s) autor(es)

^[1] Inst Bot, Dept Ecol, Ave Miguel Stefano 3687, BR-04301012 Sao Paulo, SP - Brazil

^[2] Univ Fed Parana, Lab Anal & Sintese Biodiversidade, Programa Posgrad Ecol & Conservacao, Dept Bot, Setor Ciencias Biol, Ctr Politecn, POB 19031, BR-81531980 Curitiba, PR - Brazil

• Tipo de documento: Artigo Científico
• Fonte: AQUATIC SCIENCES; v. 80, n. 2 APR 2018.
• Citações Web of Science: 1

Resumo

We used variation partitioning to evaluate significance of local environment, spatial structure and hydrological connectivity in the diatom community variation in phytoplankton and superficial sediments of six reservoirs of southeast Brazil. Common and rare diatom species were represented by different data sets, according to the species relative abundance and frequency of occurrence. To clarify the connectivity effect on the metacommunity organization, analyses were performed with and without a hydrological connectivity matrix as predictor. Results for rare and common species were similar, but explanation power depended on the habitat and the climatic season. The hydrological connectivity predictor proved to play an important role toward explaining the diatom metacommunity dynamics. Consequently, this landscape feature should not be neglected in ecological models of managed rivers. (AU)

• Processo FAPESP: 09/53898-9 - Reconstrução paleolimnológica da Represa Guarapiranga e diagnóstico da qualidade atual da água e dos sedimentos de mananciais da RMSP com vistas ao gerenciamento do abastecimento
• Beneficiário: Carlos Eduardo de Mattos Bicudo
• Modalidade de apoio: Auxílio à Pesquisa - Temático
• Processo FAPESP: 13/10314-2 - Comparação da biodiversidade e distribuição das diatomáceas planctônicas, perifíticas e de sedimentos superficiais em seis reservatórios no sul do estado de São Paulo
• Beneficiário: Gisele Carolina Marquardt
• Modalidade de apoio: Bolsas no Brasil - Doutorado